Bug #52001 [NEW]: Memory allocation problems after using variable variables

From: Date: Sat, 05 Jun 2010 15:14:29 +0000
Subject: Bug #52001 [NEW]: Memory allocation problems after using variable variables
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-151111@lists.php.net to get a copy of this message 
From:             
Operating system: Linux
PHP version:      5.3.2
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:Memory allocation problems after using variable variables

Description:
------------
After calling the function using a non-defined variable variable as a
second parameter the interpreter goes crazy. Just reproduce the script on
any of 5.3.* versions of PHP.

Test script:
---------------
<?php
a(0,$$var);

$temp1=1;
$temp2=2;
echo $temp1;

function a($b,$c) {}
?>

Expected result:
----------------
1

Actual result:
--------------
2

-- 
Edit bug report at http://bugs.php.net/bug.php?id=52001&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=52001&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=52001&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=52001&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=52001&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52001&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=52001&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=52001&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=52001&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=52001&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=52001&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=52001&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=52001&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=52001&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=52001&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=52001&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=52001&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=52001&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=52001&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=52001&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=52001&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=52001&r=mysqlcfg

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